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frosja888 [35]
3 years ago
9

Is table salt and chalk a homogeneous or heterogeneous mixture?

Chemistry
2 answers:
Alekssandra [29.7K]3 years ago
8 0
Table salt is uniform in state when mixed with water as it dissolves so therefore table salt is homogeneous and chalk is heterogeneous because even grounded up it is still a cloudy substance and you would not be able to see through it :)
Dovator [93]3 years ago
3 0
The answer is heterogeneous 
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2 years ago
Which statement explains the energy term in this reaction
lana66690 [7]

Answer:

Mass is lost due to the conversion of mass to energy

Explanation:

The question is not complete, the complete question is given as:

        ^{235}_{72}U +^{1}_{0}n                       ⇒        ^{140}_{56}Ba+^{93}_{36}Kr+3^{1}_{0}n+energy

total mass equals 236.053 u              total mass equals 235.868 u

Which statement explains the energy term in this reaction? (1) Mass is gained due to the conversion of mass to energy. (2) Mass is gained due to the conversion of energy to mass. (3) Mass is lost due to the conversion of mass to energy. (4) Mass is lost due to the conversion of energy to mass.

Answer: From Einstein’s equation  E = mc², when a radioisotope element undergoes fission or fusion in a nuclear reaction, it loses a tiny amount of mass.This mass lost is converted to energy.

The law of conservation of energy  holds for this type of reaction (i.e  the sum of mass and energy is remains the same in a nuclear reaction). Mass changes to energy, but the total amount of mass and energy combined remains the same before and after a nuclear reaction.

From the reaction above, the total decrease in mass = 236.053 - 235.868 = 0.185 u

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2 years ago
A decomposition reaction always breaks a compound down into two pure elements. True or False.
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False-- most of the time not enough energy is put into the system, so the compounds or whatever cant break down fully into their elements

6 0
3 years ago
Read 2 more answers
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